1PCS Black Roller Saddle Style Tune-o-Matic Bridge for LP Electric Guitar Made of high quality alloy, the roller bridge is durable and corrosion resistant. Fully adjustable saddles for harmonics with smooth working rollers Excellent quality black replacement electric guitar bridge with locking posts. The aided studs and wrenches get it easier to install, and make you convenient to use anywhere. String Spacing:10.3mm